trillion

noun

tril·​lion ˈtri(l)-yən How to pronounce trillion (audio)
Synonyms of trillionnext
1
: a number equal to 1,000 times one billion see Table of Numbers
2
: an indeterminately large number
a trillion mosquitoes out tonight
trillion adjective
trillionth adjective or noun

Examples of trillion in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Every day, as sunlight streams into your eyes, trillions of tiny clocks in your cells reset. Veronique Greenwood, Time, 9 Dec. 2025 With some analysts forecasting that AI spending will reach into the trillions of dollars by the end of the decade, the boom is boosting excitement about economic advancement and the future of technology while simultaneously raising concerns about privacy, safety and job security. Ashley Capoot, CNBC, 9 Dec. 2025 Encourage experimentation and entrepreneurship During two decades of the Internet Supercycle (1998-2018), start-ups created trillions of dollars in economic value and roughly half of all new jobs in OECD countries. Justin Hotard, Fortune, 7 Dec. 2025 By 2010, the International Telecommunications Union reported trillions of messages sent yearly, turning SMS into a global cultural habit that shaped abbreviations like LOL and BRB. Aamir Khollam, Interesting Engineering, 3 Dec. 2025 See All Example Sentences for trillion

Word History

Etymology

French, from tri- + -illion (as in million)

First Known Use

1745, in the meaning defined at sense 2

Time Traveler
The first known use of trillion was in 1745

Browse Nearby Words

Cite this Entry

“Trillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trillion. Accessed 11 Dec. 2025.

Kids Definition

trillion

noun
tril·​lion ˈtril-yən How to pronounce trillion (audio)
1
: a number equal to 1,000 times one billion see number
2
: a very large number
a trillion mosquitoes out tonight
trillion adjective
trillionth adjective
trillionth noun

More from Merriam-Webster on trillion

Last Updated: - Updated example sentences
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